Big-name tube amplifiers often don’t come cheap ... The transformer isn’t perfect, and bass response is a compromise, but it’s a place to start your tinkering journey.

It similarly has a tube-driven effects loop. Both channels are served by Master Volume, Bass, Middle, Treble, Bright Switch, and Volume controls, with Presence and Depth serving both. Both amps ...

Headphone amplifiers make for simple, practical electronics projects. The Bass Bump Headphone Amp is no exception, since it’s made out of easy to source parts, and can be built on a proto-board.